# -*- coding: utf-8 -*-
"""
Tencent is pleased to support the open source community by making 蓝鲸智云PaaS平台社区版 (BlueKing PaaS
Community Edition) available.
Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
Licensed under the MIT License (the "License"); you may not use this file except in compliance with the License.
You may obtain a copy of the License at http://opensource.org/licenses/MIT
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
"""

import json
import re

from esb.utils.base import has_path_vars
from common.errors import error_codes
from components.component import BaseComponent, SetupConfMixin
from .toolkit import configs


class DataComponent(BaseComponent, SetupConfMixin):

    sys_name = configs.SYSTEM_NAME
    host = configs.host

    def get_host(self):
        try:
            dest_path_prefix = re.match(r"/([a-z]+)/?", self.dest_path).group(1)
        except Exception:
            raise error_codes.BUFFET_CANNOT_FORMAT_PATH.format_prompt(
                "The component's destination request path format error, "
                "please contact the component developer to handle it.",
                replace=True,
            )

        if dest_path_prefix in ["adminapi", "databus", "ja", "metaapi", "tool", "trt", "maple"]:
            return configs.host
        elif dest_path_prefix in ["dataflow", "authapi"]:
            return configs.processorapi_host
        elif dest_path_prefix in ["algorithm"]:
            return configs.modelflow_host
        elif dest_path_prefix in ["bksql"]:
            return configs.bksql_host
        else:
            raise error_codes.BUFFET_CANNOT_FORMAT_PATH.format_prompt(
                "The component's destination request path is not supported, "
                "please contact the component developer to handle it.",
                replace=True,
            )

    def handle(self):
        self.host = self.get_host()

        # 替换目标地址中的变量模版
        path = self.dest_path
        if has_path_vars(self.dest_path):
            path_vars = self.request.path_vars and self.request.path_vars.val_dict or {}
            try:
                path = self.dest_path.format(**path_vars)
            except KeyError, e:
                raise error_codes.BUFFET_CANNOT_FORMAT_PATH.format_prompt("{%s}" % e.args[0])

        # 请求参数
        params, data, files = None, None, None
        if self.dest_http_method == "GET":
            params = self.request.get_clean_params()
            headers = {"Content-Type": "application/x-www-form-urlencoded"}
        elif (
            "multipart/form-data" in self.request.wsgi_request.META.get("CONTENT_TYPE", "")
            and self.request.wsgi_request.FILES
        ):
            data = self.request.kwargs
            files = self.request.wsgi_request.FILES
            headers = {}
        else:
            data = json.dumps(self.request.kwargs)
            headers = {"Content-Type": "application/json"}

        if "X-Method-Override" in self.request.headers:
            headers.update({"X-Method-Override": self.request.headers["X-Method-Override"]})

        # 请求接口
        response = self.outgoing.http_client.request(
            self.dest_http_method,
            self.host,
            path,
            params=params,
            data=data,
            files=files,
            headers=headers,
            timeout=600,
        )
        self.response.payload = response
